Yahoo Mail is new and Web attacks are frustrating

So Yahoo! has updated its mail service. This is, of course, an attempt to fight off Google's new mail service.

Marcel Nienhuis, a senior analyst for the Radicati Group, a market research firm that focuses on online communications, said those worries are now probably moot. Yahoo's free service is probably enough for most people, while the premium service will appeal to hardcore Internet users, he said.
"This will negate the storage benefit of Google," Nienhuis said. "The Yahoo service is better than the Google service. Users are familiar with it, and many of them have their contacts there."
He also added that Yahoo's spam filter is better than Google's.

Well, that's all fine and dandy, but it seems now Yahoo mail doesn't work. Every time I try to do something, my computer can't find the page. It's really frustrating. And at a bad time, since I just started a Google mail account too. I like that Yahoo is updating their service, but can they please make sure it works right before unveiling it? I'm sure in a day or two these won't be problems.
UPDATE: Well, as Cybele pointed out in the comments, the slow down doesn't appear to be Yahoo's fault. There was an attack on major Web sites (including Yahoo) today. So I'll chalk it up to that. The mail seems to be working fine now.